Keywords: Water-soluble fertilisers, crystalline fertilisers, electrical conductivity, fertigation, micronutrients, liquid fertilisers.

The characteristics and some production methods for the most common fertilisers used in fertigation in protected cropping systems are reviewed. The fertilisers discussed include straight nitrogen, phosphorus and potassium solid fertilisers, mixtures of these, metal chelates and liquid fertilisers.

Teija Kankaanpää, Kemira GrowHow Oy, P O Box 330, FIN-00101 Helsinki, Finland.

20 Pages, 2 Figures, 3 Tables, 10 References.